chordates answers key

Chordates (video) Crash Course: Biology Khan.. In this class of chordates you'll find me, Dame Judi Dench, your dog, your cat, Shamu the orca, African elephants, the South American pudu, and 5,300 other known species of mammals. It all began with the simple ancestor more than 500 million years ago in this crazy chordate phylum, and we've finally made it! And now you know exactly who you are.

Chordates (video) Crash Course: Biology Khan.
Chordates (video) Crash Course: Biology Khan. from d2vlcm61l7u1fs.cloudfront.net

It has some body equipment like ours. They have nerve chords, gill slits, segmented muscles, and a notochord; precursor of a backbone similar to the discs in human spines. Name one positive.

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